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..........do you use it in your Highlander?
What brands are top tier again?
Around here most of the gas comes from the same source. Even delivered in the same trucks...........do you use it in your Highlander?
Yes. Local..Costco. Traveling..Chevron..Shell..Valero...........do you use it in your Highlander?
Sadly here in CA there is no more pure fuel, it all has ethanol in it...![]()
I get the impression that "top tier" doesn't relate to the octane number, but the marketing budget of the producerMy owners manual says to use 87 octane, the V6 is designed to run on that, anything higher is a waste of money.
Know what ya mean. FWIW...only 113K mi on my old 98 Buick V6 (when sold) using alot of unbranded 87 oct. & noticed no real diff. VS using branded fuel. In 2014 I switched over to Costco (top tier)..87 oct. Main reason...close by..lower price per gal..rebate using citi visa. But, lots of stations are "top tier".In order for me to buy Top-Tier gas I'd have to drive 20 miles out of my way. So I rarely ever buy it. Is it going to help much? I don't know. I've owned 4 vehicles with well over 300k miles on them. Wifes 07 Lexus also recommends Top-Tier (and again never done). Car now has over 180k miles and still runs great.